package chapter04.demo1.example15;
class Animal {
    public void shout(){
        System.out.println("喵喵。。。。");
    }
}
class Dog extends Animal {
    public void shout(){
        System.out.println("汪汪。。。。");
    }
    public void eat(){
        System.out.println("吃骨头。。。。");
    }
}
public class Example15 {
    public static void main(String[] args) {
        Dog dog = new Dog();
        Animal an = dog;
        an.shout();
    }
}
